Table invisible in preview mode

STEPS:
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• a table is added in the xinha field (for example in the body of articles > myarticle1)
• - click save and the table is not seen
• - click done and the table is visible
• - click edit and it disappears

Tips for the creation of the table:

• start with Insert Table and leave the default options
• select the table and click Table properties (see attached tbl_props.png for details)
• a table is visible (see tbl.png)
• click Save (see attached after_save.png)
• click Done (see after_done.png)